These papers provide major regional summaries of Holocene climate history across the western Arctic, building on an extensive compilation of previously published proxy climate records (Sundqvist et al. 2014). They compare the Arctic Holocene dataset with other available paleoenvironmental evidence to reconstruct spatial-temporal patterns of temperature change and to quantify the most prominent trends represented by a large variety of palaeo-evidence from terrestrial and marine sites north of 58°N.